選擇性神經截斷術後小腿肌肉的代償性肥大
Compensatory Hypertrophy of Calf Muscles After Selective Neurectomy
Choong Jae Lee, M.D., Jun Ho Park, M.D., and Sun Won Park, M.D.
Incheon, South Korea
Abstract.
Background: Unexpected contour changes frequently occurred
after surgical contouring of the calves by selective
neurectomy of the nerve to the medialgastrocnemius
muscle. We recently experienced a rather unusual case, in
which the nerve to the medialgastrocnemius muscle was
selectively transected on one side, whereas on the other side,
the nerve to the soleus was transected by mistake.
Methods: To investigate the reason for the contour change,
the authors compared the muscle volume ratio of the posterior
compartment of eight normalcal ves of eight normal
volunteers with two calves in the reported case by using
MRIs.
Results: The volume ration of normalcontrolcal ves was
0.22:0.12:0.66, respectively, for the medial and lateral gastrocnemius
muscles and the soleus muscle. In the case of the
calf with atrophy of the medial gastrocnemius muscle, the
volume ratio was 0.13:0.20:0.67, respectively. In the case of
the calf with atrophy of the soleus muscle, the volume ratio
was 0.27:0.14:0.59, respectively.
Conclusion: Physician and the patient should keep in mind
before the operation that even though one muscle in the calf
is selectively atrophied after the selective neurectomy, the
other muscles can hypertrophy for compensation, thus
causing possible distortion of aesthetic result.
Key words: Selective neurectomy—Compensatory hypertrophy—
Calf